mirror of https://github.com/cc65/cc65.git
cbm stuff from greggs pull request
This commit is contained in:
mrdudz
parent
947b09ad96
commit
8902730756
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@ -15,7 +15,7 @@ FNAM := $BB ; Address of filename
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FNAM_BANK := $C7 ; Bank for filename
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KEY_COUNT := $D0 ; Number of keys in input buffer
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FKEY_COUNT := $D1 ; Characters for function key
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MODE := $D7 ; 40/80 column mode flag
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MODE := $D7 ; 40-/80-column mode (bit 7: 80 columns)
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CURS_X := $EC ; Cursor column
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CURS_Y := $EB ; Cursor row
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SCREEN_PTR := $E0 ; Pointer to current char in text screen
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@ -167,8 +167,14 @@ SID_Read3 := $D41C
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; ---------------------------------------------------------------------------
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; I/O: VDC (128 only)
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VDC_INDEX := $D600
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VDC_DATA := $D601
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VDC_INDEX := $D600 ; register address port
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VDC_DATA := $D601 ; data port
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; Registers
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VDC_DATA_HI = 18 ; video RAM address (big endian)
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VDC_DATA_LO = 19
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VDC_CSET = 28
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VDC_RAM_RW = 31 ; RAM port
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; ---------------------------------------------------------------------------
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; I/O: Complex Interface Adapters
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121
doc/funcref.sgml
121
doc/funcref.sgml
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@ -4,7 +4,7 @@
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<title>cc65 function reference
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<author><url url="mailto:uz@cc65.org" name="Ullrich von Bassewitz">,<newline>
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<url url="mailto:greg.king5@verizon.net" name="Greg King">
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<date>2017-11-21
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<date>2017-12-09
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<abstract>
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cc65 is a C compiler for 6502 based systems. This function reference describes
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@ -240,6 +240,10 @@ function.
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<item><ref id="chline" name="chline">
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<item><ref id="chlinexy" name="chlinexy">
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<item><ref id="clrscr" name="clrscr">
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<item><ref id="cpeekc" name="cpeekc">
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<item><ref id="cpeekcolor" name="cpeekcolor">
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<item><ref id="cpeekrevers" name="cpeekrevers">
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<item><ref id="cpeeks" name="cpeeks">
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<item><ref id="cprintf" name="cprintf">
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<item><ref id="cputc" name="cputc">
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<item><ref id="cputcxy" name="cputcxy">
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@ -2363,6 +2367,121 @@ be used in presence of a prototype.
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</quote>
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<sect1>cpeekc<label id="cpeekc"><p>
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<quote>
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<descrip>
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<tag/Function/Get a character from the display memory.
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<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
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<tag/Declaration/<tt/char cpeekc (void);/
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<tag/Description/The function gets the character that's at the current location
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of the cursor in the display screen RAM. That character is converted, if
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needed, into the encoding that can be passed to <tt/cputc()/.
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<tag/Notes/<itemize>
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<item>Conio peek functions don't have <tt/cpeek...xy()/ versions. That was
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done to make it obvious that peeking doesn't move the cursor in any way. Your
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program must place the cursor where it wants to peek before it calls any of
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those functions.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="cpeekcolor" name="cpeekcolor">,
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<ref id="cpeekrevers" name="cpeekrevers">,
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<ref id="cpeeks" name="cpeeks">,
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<ref id="cputc" name="cputc">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>cpeekcolor<label id="cpeekcolor"><p>
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<quote>
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<descrip>
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<tag/Function/Get a color from the display memory.
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<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
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<tag/Declaration/<tt/unsigned char cpeekcolor (void);/
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<tag/Description/The function gets the color number that's at the current
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location of the cursor in the display screen RAM. That number can be passed to
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<tt/textcolor()/.
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<tag/Notes/<itemize>
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<item>Conio peek functions don't have <tt/cpeek...xy()/ versions. That was
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done to make it obvious that peeking doesn't move the cursor in any way. Your
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program must place the cursor where it wants to peek before it calls any of
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those functions.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="cpeekc" name="cpeekc">,
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<ref id="cpeekrevers" name="cpeekrevers">,
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<ref id="cpeeks" name="cpeeks">,
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<ref id="cputc" name="cputc">,
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<ref id="textcolor" name="textcolor">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>cpeekrevers<label id="cpeekrevers"><p>
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<quote>
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<descrip>
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<tag/Function/Get a reverse-character attribute from the display memory.
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<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
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<tag/Declaration/<tt/unsigned char cpeekrevers (void);/
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<tag/Description/The function gets the "reverse-mode" attribute of the
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character that's at the current location of the cursor in the display screen
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RAM. It returns a boolean value (0/1) that can be passed to <tt/revers()/.
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<tag/Notes/<itemize>
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<item>Conio peek functions don't have <tt/cpeek...xy()/ versions. That was
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done to make it obvious that peeking doesn't move the cursor in any way. Your
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program must place the cursor where it wants to peek before it calls any of
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those functions.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="cpeekc" name="cpeekc">,
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<ref id="cpeekcolor" name="cpeekcolor">,
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<ref id="cpeeks" name="cpeeks">,
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<ref id="cputc" name="cputc">,
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<ref id="revers" name="revers">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>cpeeks<label id="cpeeks"><p>
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<quote>
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<descrip>
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<tag/Function/Get a string from the display memory.
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<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
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<tag/Declaration/<tt/void __fastcall__ cpeeks (char* s, unsigned length);/
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<tag/Description/The function gets a fixed-length string ('\0'-terminated) of
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characters that start at the current location of the cursor in the display
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screen RAM. Those characters are converted, if needed, into the encoding that
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can be passed to <tt/cputs()/. The first argument must point to a RAM area
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that's large enough to hold "length + 1" bytes.
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<tag/Notes/<itemize>
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<item>Conio peek functions don't have <tt/cpeek...xy()/ versions. That was
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done to make it obvious that peeking doesn't move the cursor in any way. Your
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program must place the cursor where it wants to peek before it calls any of
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those functions.
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<item>The function is available as only a fastcall function;
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so, it may be used only in the presence of a prototype.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="cpeekc" name="cpeekc">,
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<ref id="cpeekcolor" name="cpeekcolor">,
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<ref id="cpeekrevers" name="cpeekrevers">,
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<ref id="cputc" name="cputc">,
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<ref id="cputs" name="cputs">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>creat<label id="creat"><p>
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<quote>
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@ -144,11 +144,9 @@ void __fastcall__ pokewsys (unsigned addr, unsigned val);
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#define _textcolor(color) COLOR_WHITE
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#define _bgcolor(color) COLOR_BLACK
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#define _bordercolor(color) COLOR_BLACK
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#define _cpeekcolor(color) COLOR_WHITE
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/* End of cbm610.h */
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#endif
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@ -148,6 +148,23 @@ int cscanf (const char* format, ...);
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int __fastcall__ vcscanf (const char* format, va_list ap);
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/* Like vscanf(), but uses direct keyboard input */
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char cpeekc (void);
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/* Return the character from the current cursor position */
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unsigned char cpeekcolor (void);
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/* Return the color from the current cursor position */
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unsigned char cpeekrevers (void);
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/* Return the reverse attribute from the current cursor position.
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** If the character is reversed, then return 1; return 0 otherwise.
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*/
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void __fastcall__ cpeeks (char* s, unsigned int length);
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/* Return a string of the characters that start at the current cursor position.
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** Put the string into the buffer to which "s" points. The string will have
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** "length" characters, then will be '\0'-terminated.
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*/
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unsigned char __fastcall__ cursor (unsigned char onoff);
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/* If onoff is 1, a cursor is displayed when waiting for keyboard input. If
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** onoff is 0, the cursor is hidden when waiting for keyboard input. The
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@ -224,6 +241,9 @@ void __fastcall__ cputhex16 (unsigned val);
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#if defined(_bordercolor)
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# define bordercolor(x) _bordercolor(x)
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#endif
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#if defined(_cpeekcolor)
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# define cpeekcolor(x) _cpeekcolor(x)
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#endif
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@ -105,6 +105,7 @@ extern void pet_stdjoy_joy[]; /* Referred to by joy_static_stddrv[] */
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#define _textcolor(color) COLOR_WHITE
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#define _bgcolor(color) COLOR_BLACK
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#define _bordercolor(color) COLOR_BLACK
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#define _cpeekcolor(color) COLOR_WHITE
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@ -0,0 +1,65 @@
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;
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; 2016-02-28, Groepaz
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; 2017-06-26, Greg King
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;
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; char cpeekc (void);
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;
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.export _cpeekc
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.import plot, popa
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.include "zeropage.inc"
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.include "c128.inc"
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_cpeekc:
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lda MODE
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bmi @c80
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ldy CURS_X
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lda (SCREEN_PTR),y ; get char
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@return:
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and #<~$80 ; remove reverse flag
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; Convert the screen code into a PetSCII code.
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; $00 - $1F: +$40
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; $20 - $3F
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; $40 - $7F: +$80
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cmp #$20
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bcs @sk1 ;(bge)
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ora #$40
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rts
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@sk1: cmp #$40
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bcc @end ;(blt)
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ora #$80
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@end: ldx #0
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rts
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@c80:
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lda SCREEN_PTR
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ldy SCREEN_PTR+1
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clc
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adc CURS_X
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bcc @s
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iny
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; get byte from VDC mem
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@s: ldx #VDC_DATA_LO
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stx VDC_INDEX
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@L0: bit VDC_INDEX
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bpl @L0
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sta VDC_DATA
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dex
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stx VDC_INDEX
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sty VDC_DATA
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ldx #VDC_RAM_RW
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stx VDC_INDEX
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@L1: bit VDC_INDEX
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bpl @L1 ; wait for blanking
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lda VDC_DATA
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jmp @return
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@ -0,0 +1,56 @@
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;
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; 2016-02-28, Groepaz
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; 2017-06-26, Greg King
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;
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; unsigned char cpeekcolor (void);
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;
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.export _cpeekcolor
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.include "c128.inc"
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_cpeekcolor:
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bit MODE
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bmi @c80
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ldy CURS_X
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lda (CRAM_PTR),y ; get color
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and #$0F
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ldx #>$0000
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rts
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@c80: lda CRAM_PTR
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ldy CRAM_PTR+1
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clc
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adc CURS_X
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bcc @s
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iny
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; get byte from VDC mem
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@s: ldx #VDC_DATA_LO
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stx VDC_INDEX
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@L0: bit VDC_INDEX
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bpl @L0
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sta VDC_DATA
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dex
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stx VDC_INDEX
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sty VDC_DATA
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ldx #VDC_RAM_RW
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stx VDC_INDEX
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@L1: bit VDC_INDEX
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bpl @L1 ; wait for blanking
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lda VDC_DATA
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and #$0F
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; translate VDC->VIC colour
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vdctovic:
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ldy #$0F + 1
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@L2: dey
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cmp $CE5C,y
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bne @L2
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tya
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ldx #>$0000
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rts
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@ -0,0 +1,51 @@
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;
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; 2016-02-28, Groepaz
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; 2017-06-26, Greg King
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;
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; unsigned char cpeekrevers (void);
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;
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.export _cpeekrevers
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.include "zeropage.inc"
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.include "c128.inc"
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_cpeekrevers:
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lda MODE
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bmi @c80
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ldy CURS_X
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lda (SCREEN_PTR),y ; get char
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@return:
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and #$80 ; get reverse flag
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asl a
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tax ; ldx #>$0000
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rol a ; return boolean value
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rts
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@c80:
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lda SCREEN_PTR
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ldy SCREEN_PTR+1
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clc
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adc CURS_X
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bcc @s
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iny
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; get byte from VDC mem
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@s: ldx #VDC_DATA_LO
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stx VDC_INDEX
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@L0: bit VDC_INDEX
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bpl @L0
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sta VDC_DATA
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dex
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stx VDC_INDEX
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sty VDC_DATA
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ldx #VDC_RAM_RW
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stx VDC_INDEX
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@L1: bit VDC_INDEX
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bpl @L1 ; wait for blanking
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lda VDC_DATA
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jmp @return
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@ -0,0 +1,15 @@
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;
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; 2017-11-23, Greg King
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;
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; void cpeeks (char* s, unsigned length);
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;
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; C128 can't use "cbm/cpeeks.s" because both 40 and 80 columns must be handled.
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; Stub file, for now, so that its library can be built.
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.export _cpeeks
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.import popax
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_cpeeks:
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jmp popax ; pop s
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|
@ -0,0 +1,53 @@
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|||
;
|
||||
; 2016-02-28, Groepaz
|
||||
; 2017-06-22, Greg King
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;
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; char cpeekc (void);
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;
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|
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.export _cpeekc
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; Get a system-specific file.
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; Note: The cbm610, and c128 targets need special
|
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; versions that handle RAM banking and the 80-column VDC.
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.if .def(__C16__)
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.include "plus4.inc" ; both C16 and Plus4
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.elseif .def(__C64__)
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.include "c64.inc"
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.elseif .def(__CBM510__)
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.import CURS_X: zp, SCREEN_PTR: zp
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.include "cbm510.inc"
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.elseif .def(__PET__)
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.include "pet.inc"
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.elseif .def(__VIC20__)
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.include "vic20.inc"
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.endif
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_cpeekc:
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ldy CURS_X
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lda (SCREEN_PTR),y ; get screen code
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ldx #>$0000
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and #<~$80 ; remove reverse bit
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||||
|
||||
; Convert the screen code into a PetSCII code.
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||||
; $00 - $1F: +$40
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; $20 - $3F
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; $40 - $5f: +$20
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; $60 - $7F: +$40
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||||
|
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cmp #$20
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bcs @sk1 ;(bge)
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ora #$40
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rts
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@sk1: cmp #$40
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bcc @end ;(blt)
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cmp #$60
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bcc @sk2 ;(blt)
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;sec
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adc #$20 - $01
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@sk2: ;clc ; both above cmp and adc clear carry flag
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adc #$20
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@end: rts
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||||
|
|
@ -0,0 +1,28 @@
|
|||
;
|
||||
; 2016-02-28, Groepaz
|
||||
; 2017-06-22, Greg King
|
||||
;
|
||||
; unsigned char cpeekcolor (void);
|
||||
;
|
||||
|
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.export _cpeekcolor
|
||||
|
||||
; Get a system-specific file.
|
||||
; Note: The cbm510, cbm610, c128, and Pet targets need special
|
||||
; versions that handle RAM banking, the 80-column VDC, and monochrome.
|
||||
|
||||
.if .def(__C16__)
|
||||
.include "plus4.inc" ; both C16 and Plus4
|
||||
.elseif .def(__C64__)
|
||||
.include "c64.inc"
|
||||
.elseif .def(__VIC20__)
|
||||
.include "vic20.inc"
|
||||
.endif
|
||||
|
||||
|
||||
_cpeekcolor:
|
||||
ldy CURS_X
|
||||
lda (CRAM_PTR),y ; get color
|
||||
and #$0F
|
||||
ldx #>$0000
|
||||
rts
|
||||
|
|
@ -0,0 +1,35 @@
|
|||
;
|
||||
; 2016-02-28, Groepaz
|
||||
; 2017-06-15, Greg King
|
||||
;
|
||||
; unsigned char cpeekrevers (void);
|
||||
;
|
||||
|
||||
.export _cpeekrevers
|
||||
|
||||
; Get a system-specific file.
|
||||
; Note: The cbm610, and c128 targets need special
|
||||
; versions that handle RAM banking and the 80-column VDC.
|
||||
|
||||
.if .def(__C16__)
|
||||
.include "plus4.inc" ; both C16 and Plus4
|
||||
.elseif .def(__C64__)
|
||||
.include "c64.inc"
|
||||
.elseif .def(__CBM510__)
|
||||
.import CURS_X: zp, SCREEN_PTR: zp
|
||||
.include "cbm510.inc"
|
||||
.elseif .def(__PET__)
|
||||
.include "pet.inc"
|
||||
.elseif .def(__VIC20__)
|
||||
.include "vic20.inc"
|
||||
.endif
|
||||
|
||||
|
||||
_cpeekrevers:
|
||||
ldy CURS_X
|
||||
lda (SCREEN_PTR),y ; get screen code
|
||||
and #$80 ; get reverse bit
|
||||
asl a
|
||||
tax ; ldx #>$0000
|
||||
rol a ; return boolean value
|
||||
rts
|
||||
|
|
@ -0,0 +1,93 @@
|
|||
;
|
||||
; 2017-07-05, Greg King
|
||||
;
|
||||
; void cpeeks (char* s, unsigned length);
|
||||
;
|
||||
|
||||
.export _cpeeks
|
||||
|
||||
.import popax
|
||||
.importzp ptr1, ptr2, ptr3, tmp1, tmp2
|
||||
|
||||
.macpack generic
|
||||
|
||||
; Get a system-specific file.
|
||||
; Note: The cbm610, and c128 targets need special
|
||||
; versions that handle RAM banking and the 80-column VDC.
|
||||
|
||||
.if .def(__C16__)
|
||||
.include "plus4.inc" ; both C16 and Plus4
|
||||
.elseif .def(__C64__)
|
||||
.include "c64.inc"
|
||||
.elseif .def(__CBM510__)
|
||||
.import CURS_X: zp, SCREEN_PTR: zp
|
||||
.include "cbm510.inc"
|
||||
.elseif .def(__PET__)
|
||||
.include "pet.inc"
|
||||
.elseif .def(__VIC20__)
|
||||
.include "vic20.inc"
|
||||
.endif
|
||||
|
||||
|
||||
_cpeeks:
|
||||
eor #<$FFFF ; counting a word upward is faster
|
||||
sta ptr3 ; so, we use -(length + 1)
|
||||
txa
|
||||
eor #>$FFFF
|
||||
sta ptr3+1
|
||||
|
||||
lda SCREEN_PTR
|
||||
ldx SCREEN_PTR+1
|
||||
sta ptr2
|
||||
stx ptr2+1
|
||||
ldy CURS_X
|
||||
sty tmp2
|
||||
|
||||
jsr popax
|
||||
sta tmp1 ; (will be a .Y index)
|
||||
stx ptr1+1
|
||||
ldx #<$0000
|
||||
stx ptr1
|
||||
bze L3 ; branch always
|
||||
|
||||
L4: ldy tmp2
|
||||
lda (ptr2),y ; get char
|
||||
iny
|
||||
bnz L2
|
||||
inc ptr2+1
|
||||
L2: sty tmp2
|
||||
and #<~$80 ; remove reverse bit
|
||||
|
||||
; Convert the screen code into a PetSCII code.
|
||||
; $00 - $1F: +$40
|
||||
; $20 - $3F
|
||||
; $40 - $5f: +$20
|
||||
; $60 - $7F: +$40
|
||||
|
||||
cmp #$20
|
||||
blt @sk1 ;(bcc)
|
||||
cmp #$40
|
||||
blt L5
|
||||
cmp #$60
|
||||
blt @sk2 ;(bcc)
|
||||
clc
|
||||
@sk1: adc #$20
|
||||
@sk2: ;clc ; both above cmp and adc clear carry flag
|
||||
adc #$20
|
||||
|
||||
L5: ldy tmp1
|
||||
sta (ptr1),y
|
||||
iny
|
||||
bnz L1
|
||||
inc ptr1+1
|
||||
L1: sty tmp1
|
||||
|
||||
L3: inc ptr3 ; count length
|
||||
bnz L4
|
||||
inc ptr3+1
|
||||
bnz L4
|
||||
|
||||
txa ; terminate the string
|
||||
ldy tmp1
|
||||
sta (ptr1),y
|
||||
rts
|
||||
|
|
@ -0,0 +1,24 @@
|
|||
;
|
||||
; 2016-02-28, Groepaz
|
||||
; 2017-06-19, Greg King
|
||||
;
|
||||
; unsigned char cpeekcolor (void);
|
||||
;
|
||||
|
||||
.export _cpeekcolor
|
||||
|
||||
.import CURS_X: zp, CRAM_PTR: zp
|
||||
|
||||
.include "cbm510.inc"
|
||||
|
||||
|
||||
_cpeekcolor:
|
||||
ldx IndReg
|
||||
lda #$0F
|
||||
sta IndReg
|
||||
ldy CURS_X
|
||||
lda (CRAM_PTR),y ; get color
|
||||
stx IndReg
|
||||
and #$0F
|
||||
ldx #>$0000
|
||||
rts
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
;
|
||||
; 2016-06, Christian Groessler
|
||||
; 2017-07-05, Greg King
|
||||
;
|
||||
; unsigned char doesclrscrafterexit (void);
|
||||
;
|
||||
; Returns 0/1 if, after program termination, the screen isn't/is cleared.
|
||||
;
|
||||
|
||||
.import return1
|
||||
|
||||
; cc65's CBM510 programs switch to a display screen in the program RAM bank;
|
||||
; then, they switch back to the system bank when they exit.
|
||||
; The screen is cleared.
|
||||
|
||||
.export _doesclrscrafterexit := return1
|
||||
|
|
@ -0,0 +1,45 @@
|
|||
;
|
||||
; 2016-02-28, Groepaz
|
||||
; 2017-06-19, Greg King
|
||||
;
|
||||
; char cpeekc (void);
|
||||
;
|
||||
|
||||
.export _cpeekc
|
||||
|
||||
.import CURS_X: zp, CharPtr: zp
|
||||
|
||||
.include "cbm610.inc"
|
||||
|
||||
|
||||
_cpeekc:
|
||||
ldx IndReg
|
||||
ldy #$0F
|
||||
sty IndReg
|
||||
|
||||
ldy CURS_X
|
||||
lda (CharPtr),y ; get char from system bank
|
||||
stx IndReg
|
||||
ldx #>$0000
|
||||
and #<~$80 ; remove reverse bit
|
||||
|
||||
; Convert the screen code into a PetSCII code.
|
||||
; $00 - $1F: +$40
|
||||
; $20 - $3F
|
||||
; $40 - $5f: +$20
|
||||
; $60 - $7F: +$40
|
||||
|
||||
cmp #$20
|
||||
bcs @sk1 ;(bge)
|
||||
ora #$40
|
||||
rts
|
||||
|
||||
@sk1: cmp #$40
|
||||
bcc @end ;(blt)
|
||||
cmp #$60
|
||||
bcc @sk2 ;(blt)
|
||||
;sec
|
||||
adc #$20 - $01
|
||||
@sk2: ;clc ; both above cmp and adc clear carry flag
|
||||
adc #$20
|
||||
@end: rts
|
||||
|
|
@ -0,0 +1,8 @@
|
|||
;
|
||||
; 2017-06-03, Greg King
|
||||
;
|
||||
; unsigned char cpeekcolor (void);
|
||||
;
|
||||
|
||||
.import return1
|
||||
.export _cpeekcolor := return1 ; always COLOR_WHITE
|
||||
|
|
@ -0,0 +1,29 @@
|
|||
;
|
||||
; 2016-02-28, Groepaz
|
||||
; 2017-06-19, Greg King
|
||||
;
|
||||
; unsigned char cpeekrevers (void);
|
||||
;
|
||||
|
||||
.export _cpeekrevers
|
||||
|
||||
.import plot
|
||||
.import CURS_X: zp, CharPtr: zp
|
||||
|
||||
.include "cbm610.inc"
|
||||
|
||||
|
||||
_cpeekrevers:
|
||||
ldx IndReg
|
||||
ldy #$0F
|
||||
sty IndReg
|
||||
|
||||
ldy CURS_X
|
||||
lda (CharPtr),y ; get char from system bank
|
||||
stx IndReg
|
||||
ldx #>$0000
|
||||
and #$80 ; get reverse bit
|
||||
asl a
|
||||
tax ; ldx #>$0000
|
||||
rol a ; return boolean value
|
||||
rts
|
||||
|
|
@ -0,0 +1,82 @@
|
|||
;
|
||||
; 2017-07-05, Greg King
|
||||
;
|
||||
; void cpeeks (char* s, unsigned length);
|
||||
;
|
||||
|
||||
.export _cpeeks
|
||||
|
||||
.import popax
|
||||
.importzp ptr1, ptr2, ptr3, tmp1, tmp2
|
||||
.importzp CURS_X, SCREEN_PTR
|
||||
|
||||
.include "cbm610.inc"
|
||||
.macpack generic
|
||||
|
||||
|
||||
_cpeeks:
|
||||
eor #<$FFFF ; counting a word upward is faster
|
||||
sta ptr3 ; so, we use -(length + 1)
|
||||
txa
|
||||
eor #>$FFFF
|
||||
sta ptr3+1
|
||||
|
||||
lda SCREEN_PTR
|
||||
ldx SCREEN_PTR+1
|
||||
sta ptr2
|
||||
stx ptr2+1
|
||||
ldy CURS_X
|
||||
sty tmp2
|
||||
|
||||
jsr popax
|
||||
sta tmp1 ; (will be a .Y index)
|
||||
stx ptr1+1
|
||||
ldx IndReg
|
||||
ldy #<$0000
|
||||
sty ptr1
|
||||
bze L3 ; branch always
|
||||
|
||||
L4: ldy #$0F
|
||||
sty IndReg
|
||||
ldy tmp2
|
||||
lda (ptr2),y ; get char from system bank
|
||||
stx IndReg
|
||||
iny
|
||||
bnz L2
|
||||
inc ptr2+1
|
||||
L2: sty tmp2
|
||||
and #<~$80 ; remove reverse bit
|
||||
|
||||
; Convert the screen code into a PetSCII code.
|
||||
; $00 - $1F: +$40
|
||||
; $20 - $3F
|
||||
; $40 - $5f: +$20
|
||||
; $60 - $7F: +$40
|
||||
|
||||
cmp #$20
|
||||
blt @sk1 ;(bcc)
|
||||
cmp #$40
|
||||
blt L5
|
||||
cmp #$60
|
||||
blt @sk2 ;(bcc)
|
||||
clc
|
||||
@sk1: adc #$20
|
||||
@sk2: ;clc ; both above cmp and adc clear carry flag
|
||||
adc #$20
|
||||
|
||||
L5: ldy tmp1
|
||||
sta (ptr1),y
|
||||
iny
|
||||
bnz L1
|
||||
inc ptr1+1
|
||||
L1: sty tmp1
|
||||
|
||||
L3: inc ptr3 ; count length
|
||||
bnz L4
|
||||
inc ptr3+1
|
||||
bnz L4
|
||||
|
||||
lda #$00 ; terminate the string
|
||||
ldy tmp1
|
||||
sta (ptr1),y
|
||||
rts
|
||||
|
|
@ -0,0 +1,8 @@
|
|||
;
|
||||
; 2017-06-03, Greg King
|
||||
;
|
||||
; unsigned char cpeekcolor (void);
|
||||
;
|
||||
|
||||
.import return1
|
||||
.export _cpeekcolor := return1 ; always COLOR_WHITE
|
||||
|
|
@ -0,0 +1,177 @@
|
|||
/* Test that the cpeek...() functions are the inverses of cputc(),
|
||||
** revers(), and textcolor() for the full range of character codes.
|
||||
**
|
||||
** 2017-07-15, Greg King
|
||||
*/
|
||||
|
||||
#include <conio.h>
|
||||
#include <cc65.h>
|
||||
|
||||
/* Standard location of the screen */
|
||||
|
||||
#if defined(__C128__) || defined(__C64__)
|
||||
/* only 40-column screen */
|
||||
# define SCREEN_RAM ((unsigned char*)0x0400)
|
||||
#elif defined(__C16__) /* Plus4 also */
|
||||
# define SCREEN_RAM ((unsigned char*)0x0C00)
|
||||
#elif defined(__CBM510__)
|
||||
# define SCREEN_RAM ((unsigned char*)0xF000)
|
||||
#elif defined(__CBM610__)
|
||||
# define SCREEN_RAM ((unsigned char*)0xD000)
|
||||
#elif defined(__PET__)
|
||||
# define SCREEN_RAM ((unsigned char*)0x0800)
|
||||
#elif defined(__VIC20__)
|
||||
# define SCREEN_RAM ((unsigned char*)0x1000)
|
||||
#else
|
||||
# error This program cannot test that target.
|
||||
# define SCREEN_RAM ((unsigned char*)0)
|
||||
#endif
|
||||
|
||||
static unsigned char width;
|
||||
|
||||
|
||||
/* Move the cursor backward one char with
|
||||
** the recognition of a row change.
|
||||
*/
|
||||
static void chBack (void)
|
||||
{
|
||||
unsigned char y = wherey ();
|
||||
unsigned char x = wherex ();
|
||||
|
||||
if (x == 0) {
|
||||
x = width;
|
||||
--y;
|
||||
}
|
||||
--x;
|
||||
|
||||
gotoxy (x, y);
|
||||
}
|
||||
|
||||
|
||||
/* Move the cursor forward one char with
|
||||
** the recognition of a row change.
|
||||
*/
|
||||
static void chForth (void)
|
||||
{
|
||||
unsigned char y = wherey ();
|
||||
unsigned char x = wherex ();
|
||||
|
||||
if (++x >= width) {
|
||||
x = 0;
|
||||
++y;
|
||||
}
|
||||
|
||||
gotoxy (x, y);
|
||||
}
|
||||
|
||||
|
||||
/* A hack to get an unmodified byte from the
|
||||
** screen memory at the current cursor position.
|
||||
*/
|
||||
static unsigned char peekChWithoutTranslation (void)
|
||||
{
|
||||
#if defined(__CBM610__)
|
||||
return peekbsys ((unsigned)&SCREEN_RAM[wherey () * width + wherex ()]);
|
||||
#else
|
||||
return SCREEN_RAM[wherey () * width + wherex ()];
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
/* A test which outputs the given char, reads it back from
|
||||
** screen memory, outputs the returned char at the next position,
|
||||
** then compares the two screen memory bytes for identity.
|
||||
**
|
||||
** Note: cpeekc() must be tested indirectly because some platforms "fold" their
|
||||
** character code-set into a smaller screen code-set. Therefore, cpeekc() might
|
||||
** return an equivalent, but not equal, character to the one that was cputc().
|
||||
*/
|
||||
static unsigned char testCPeekC (char ch)
|
||||
{
|
||||
unsigned char ch2_a, ch2_b, ch2_c;
|
||||
|
||||
/* Test the given char-code, but not the
|
||||
** special characters NEWLINE and RETURN
|
||||
** (they don't put anything on the screen).
|
||||
*/
|
||||
if (('\n' == ch) || ('\r' == ch)
|
||||
) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Output the char to the screen. */
|
||||
cputc (ch);
|
||||
|
||||
/* Move the cursor pos. to the previous output. */
|
||||
chBack ();
|
||||
|
||||
/* Get back the written char without any translation. */
|
||||
ch2_b = peekChWithoutTranslation ();
|
||||
|
||||
/* Get back the written char,
|
||||
** including the translation, screen-code -> text.
|
||||
*/
|
||||
ch2_a = cpeekc ();
|
||||
|
||||
/* Move the cursor to the following writing position. */
|
||||
chForth ();
|
||||
|
||||
/* Output again the char which was read back by cpeekc(). */
|
||||
cputc (ch2_a);
|
||||
|
||||
/* Move the cursor pos. to the second output. */
|
||||
chBack ();
|
||||
|
||||
/* Get back the second written char without any translation;
|
||||
** and, compare it to the first untranslated char.
|
||||
*/
|
||||
ch2_c = peekChWithoutTranslation ();
|
||||
if (ch2_c != ch2_b) {
|
||||
/* The test was NOT succesful.
|
||||
** Output a diagnostic; and, return FAILURE.
|
||||
*/
|
||||
revers(0);
|
||||
cprintf ("\r\nError on char: %#x was %#x instead.", ch, ch2_a);
|
||||
cprintf ("\r\nRaw screen codes: %#x, %#x.", ch2_b, ch2_c);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* The test was succesful.
|
||||
** Move the cursor to the following writing position.
|
||||
*/
|
||||
chForth ();
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/* The main code initiates the screen for the tests, and sets the reverse flag.
|
||||
** Then, it calls testCPeekC() for every char within 0..255.
|
||||
** Returns zero for success, one for failure.
|
||||
*/
|
||||
int main (void)
|
||||
{
|
||||
unsigned char i;
|
||||
int ret = 0;
|
||||
|
||||
clrscr ();
|
||||
revers (1);
|
||||
screensize (&width, &i);
|
||||
|
||||
#if defined(__VIC20__)
|
||||
/* The VIC-20's screen is too small to hold the full test. */
|
||||
i = 2;
|
||||
#else
|
||||
i = 0;
|
||||
#endif
|
||||
do {
|
||||
if (!testCPeekC (i)) {
|
||||
ret = 1;
|
||||
break;
|
||||
}
|
||||
} while (++i != 0); /* will wrap around when finished */
|
||||
|
||||
if (doesclrscrafterexit()) {
|
||||
cgetc();
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
Loading…
Reference in New Issue